Press space to start. Up arrow to go faster. Down arrow to go slower. W to increase thickness. S to decrease thickness. Q to show speed. A to show thickness. It works best like this: Speed: 28 Thickness: 31 Z to... you'll find out when you try it! C to clear. Please check these out: https://scratch.mit.edu/projects/461835470/ https://scratch.mit.edu/projects/521780308/ What are you doing here?